Overall Function Check

Use this procedure to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST 

1. Perform "IDLE AIR VOLUME LEARNING ". Make sure the result is OK. If NG, follow the instruction for Idle Air Volume Learning.
2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position with "OD" OFF (A/T) or 3rd position (M/T).
   NOTE: Keep the accelerator pedal as steady as possible during the cruising.
3. Set D position with "OD" ON (A/T) or 4th position (M/T), then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
   NOTE: Never apply brake during releasing the accelerator pedal.
4. Repeat steps 2 to 3 five times.
5. Select Service $07 with GST.

   If 1st trip DTC is displayed, go to "DIAGNOSTIC PROCEDURE ".